Ok I just built a computer and it worked fine it STARTED then just turned off and never turned on again I need help with this please is it my psu or my CPU ? I mean I know it works but it just turned off btw I have. A 500 watt psu is that enough for an 8 core CPU a ati 7870 gpu and asrock 970 extreme 3 motherboard ? I hope it is but I think that is the problem I will provide full specs if you need them just TELL meMBoard standoffs installed properly ? ?
Thermal paste applied CORRECTLY ? ?
4/6 pin CPU power PLUG in place ? ?Is this a 8 core AMD CPU or a i7 Quad core with hyper threading?
I am running a 500W PSU with a Sapphire HD7870 and a i7-3770, 4 hard drives, an X-Fi titanium PCI-e on a P8Z77-V LX board.

However my two 12V rails are:
12V1 = 16A
12V2 = 17A

This is what is more important, making sure your 12V rail can handle the load placed on it.

A 500W supply might have all it's current output in the 5V rail say at 60A
as P=IV 5x60 = 300W
leaving only 200W for the CPU, Graphics card and other 12V, and 3.3V components.

Also take note a PSU at best is 80% EFFICIENT meaning 20% power output is to be taken off the total. Quote from: Kurtiskain on March 14, 2013, 03:30:36 AM

Is this a 8 core AMD CPU or a i7 Quad core with hyper threading?
I am running a 500W PSU with a Sapphire HD7870 and a i7-3770, 4 hard drives, an X-Fi titanium PCI-e on a P8Z77-V LX board.

However my two 12V rails are:
12V1 = 16A
12V2 = 17A

This is what is more important, making sure your 12V rail can handle the load placed on it.

A 500W supply might have all it's current output in the 5V rail say at 60A

as P=IV 5x60 = 300W
leaving only 200W for the CPU, Graphics card and other 12V, and 3.3V components.

Also take note a PSU at best is 80% efficient meaning 20% power output is to be taken off the total.